CVE-2026-87985 PUBLISHED

Assigner: HiddenLayer
Reserved: 09.09.2026 Published: 11.09.2026 Updated: 11.09.2026

An arbitrary code execution vulnerability in Mistral Vibe allows an attacker to bypass command permission checks using ANSI-C quoted arguments. These arguments are not properly inspected, enabling a crafted allowlisted command to execute arbitrary code on the user's system without approval.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CVSS Score: 10

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	High
Attack Complexity	Low	Integrity	High	Integrity	High
Attack Requirements	None	Availability	High	Availability	High
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	mistralai
Product	mistral-vibe
Versions	Default: unaffected affected from 2.9.0 to * (incl.)

References

https://www.hiddenlayer.com/sai-security-advisory/2026-09-mistral-vibe3

Problem Types

CWE-184 Incomplete list of disallowed inputs CWE

Impacts

CAPEC-120 Double Encoding